class_docstr: Natural Questions Open: A Benchmark for Open Domain Question Answering.
code: def _info(self):
      return self.dataset_info_from_configs(
          features=tfds.features.FeaturesDict(
              {
                  "question": np.str_,
                  "answer": tfds.features.Sequence(np.str_),
              }
          ),
          supervised_keys=None,
          homepage=_URL,
      )
  
file_path: datasets/tensorflow_datasets/datasets/natural_questions_open/natural_questions_open_dataset_builder.py
imports: from __future__ import annotations
  import json
  from etils import epath
  import numpy
  import tensorflow_datasets.public_api
label_desc: Use image node_id 1 for calling the Builder obj's underlying member method code with example usage: obj._info() and returns: self